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#marine pollution

3 public questions tagged with this topic.

Aptitude and Reasoning

Ballast water is a serious issue due to possibility of

quantitative reasoning analysis shows ratio, percentage and series logic determine correct calculation. Consequently introduction of marine alien invasive species emerges as the valid choice since it meets mathematical and logical criteria, aligning with established principles in aptitude and reasoning literature.

Ref: Agrawal, Quantitative Aptitude for Competitive Examinations, Chapter 5, Logical Reasoning and Probability, covers ratios, percentages, series completion, time-distance and analytical reasoning explaining problem-solving strategies for competitive assessments.

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Applied Ecology

What effect do microplastics have in marine systems?

Microplastics are ingested or taken up by marine organisms and can remain in digestive tracts or move, especially at very small sizes, into tissues. This creates tissue contamination and may expose cells to physical irritation, polymer additives, and chemicals carried on particle surfaces. The ecological consequences depend on dose, size, polymer, and organism; microplastics do not generally enhance photosynthesis or undergo rapid biodegradation. Standardised sampling and contamination controls are essential because airborne fibres can enter samples during collection and laboratory processing.

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

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Applied Ecology

What role do plastics play in coral disease?

Plastic debris can carry microbial biofilms, including potential coral pathogens, and transport them to new hosts or hold them against wounded tissue. Entanglement and abrasion create lesions that facilitate infection, while shading and hypoxia weaken coral defences. This combination can raise disease risk through pathogen hitchhiking. Plastics do not generally sterilise reefs; bleaching may occur under stress but is not the specific mechanism described here. Particle size, shape, polymer type, weathering state, and associated chemicals all influence uptake and biological response, so micropla

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

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